Reverse clutch mechanism



Patented Nov. 11, 1924.

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PATENTJDFHCE- Vrc'ron H`. 1=1 .Livr.` or BUTLER, PENNsYLvANraAssIGNoR'ro'BU'rLER vlinie-NTE AND roUNDRv co., or BUTLER,` PENNSYLVANIA. Aco'rAR'rNEnsHrP fcoMrosED ror HENRY B MAeKINNEY, AMONT M.,MACKI'NNEmVJoHN J. MACKINNEK SARAH G;

MAGKINNEY, AND LYDIA A. MAQKINNEY.

REVERSE CLUTCH MEcHANrsM.

y 'Application ined` August 6,1921.- serial No. 490,403; f

To allem/1.0m it may concern:

Be itlknown thati I, Vieron Hf PALM,

acitizen of the United States, and resi` dent of Butler, in the' countyof Butler 5 and State of Pennsylvania, have invented a new and usefulImprovement 1n Reverse Clutch'Mechanism; andk I Ado hereby declarethefollowing to be, a full, clear, and

exactvdescription thereof. y My invention relates to reverse clutchmechanism of the type in which 'a pulley or other driven member maybedriven in either direction from a driving member whichrotatescontinuously in one direction. l The object of my invention is tosimplify and improve the construction of reverse' clutch mechanism ofthe character cated.

The accompanyingdrawing shows my inventon as applied to a pulley whichis indirequired to rotate alternately in opposite directions, as in theoperation of well drilling'tools. -It is to be understood, however,

that kthe driven member may be a shaft or B5 other rotatable elementinstead of 'a pulley.

In thP accompanying drawing Figi 1 lis y21 to permit thev internal gearringf17, with its a reversing clutch mechanism 'constructed inaccordance with my invention; Fig. 2 is an end elevational viewtakenfrom'the left of Fig. 1, with 'the 'driving cou ling removed; Fi k3 is afragmentary p an view, with parts 1n section, showino' theoperatinglevers and connections; an Fig. 4 is a reduced end view of the drivingcoupling. The construction shown'in the drawing comprises a drive shaft2 driven from any v suitable source of power, not shown, and

a pulley 3'mounted loosely on the shaft 2 by means of bearing sleeves 4and 5, suit ablel bearing bushings 6 being interposed .be-

tween-the sleeves 4 and 5 and the shaft 2. The hub of the pulley 3 maycontain ay sleeve 5 also serves to support a brake wheel 'Y 10 whichconsists lof a sleeve 11, loosely surrounding the hub sleeve 5 'of 'thepulley,

a plate 12 carried by the' sleeve 1.1, and a flange 13 extending aroundthe periphery `tions 24, and openings 24a being of the plate 12,the-*flange`13being surrounded'by a brake band 14.

The plate 12 of the brake/wheel alsoj carries one or morebearingbrackets 15.

Pins 15a are carried iny bearingsin the' plate 12 andvr in `thebrackets15, and'p'inionsl are VVmounted Von the pins' 15a.A Three fofthese sets of pins and pinions areVshownf' in the drawing,land all ofthe pinions 1,'6

mesh with the gear wheel 9 and :with an in-` ternal gear 17 formed onthe insideof a ,ring-18. which is in telescoped relation to the flange13 of the v'brake whe'el10.- The gear ring 18 lisvprovided with threespoke arms 19 which extend toward the shaft 2 and are secured by meansof screwbolts 2U,

or otherwise, to a coupling 21 that is rigidly secured to the drivingshaft 2..v A' sec ond .coupling 22, shownlat the left of Fig.l

1 may cooperate with the coupling 21 to drive the shaft 2 vfrom anyconvenientysource of power. in the scolloped form shown in Fig,` 4,recesses 23 being formed between the pojections 24 for bolting thecoupler t espoke arms 19.y Theprecesses 23 in the The coupling 21- ispreferably made project' A ormed w spol e 'arms 19, to be removedwithout' dei taching the coupler 21 from the shaft 2,

by removing the attaching bolts, turning the gearringone-sixth kof 1avrevolution and then drawing it off, the arms 19 passing through theopenings 23 in the coupler 21.

' The'pinions 16, 'together with the eX- y ternal gear 9 and theinternal gear 17, form a system of yplanetary.gearing for driving thepulley 3 in areverse direction with re-` spect to the shaft 2, thegearing being effective for thispurpose when the brake .'wheel l10 isprevented from rotating by Vmeans of the`brake band 14 in the mannerlarger in diameter than the pulley .3.- Clutch "-'shoes 27 of frictionmaterial `,are

mounted ad'acent to the friction'ring 26, and are carried y arms 28,adjustable by means `pulley?) in the same l of nuts 29 on screw-threadedins 30 which extend slidably through radia openings in a ring 31. Theinner ends of the 4pins 30 are received in a groove 32 in a colar 33which is keyed to the driving shaft 2. A short distance from the innerend of each of the pins 30 is a reduced portion 34 1n which 1s seated acircular eccentric cam member 35 pivoted on a pin 36 having its endssupported in the ring 31. The cam member 35 has an extension 37 which isconnected by means of a link 38 to a collar 39 loosely and slidablymounted on the drivmg shaft 2. The collar 39 has a roove in which is asplit ring 40 having pins 41er(-y tending from opposite sides andreceived in slots 42 in the forked upper end of` an operating lever 43which is pivotally supported at 44 on an varm 45 carried by a standard46, which, also supports a bearing 47 for the shaft 2. f l Y `When thefriction clutch grips thepulley to rotate it with the shaft, the brakeband 14 is loose, permitting the brake wheel 10 and the planetary gearsystem to also rotate with the Shaft, andvwhen on the contrary the brakeband 14 is tight the friction clutch is released. Inorder to connectthese end of the brake band 14 is secured to anv eye-bolt 54 which isadjustably secured b meansof a lock nut 55 to a clevis 5.6 whic ispivotally attached at 57 to both sidesof the lever 50. Adjacent to thepivot 57 the lever 50 has a lateral extension 58 through which extends apin 59 which also extends through the adjacent endsv of two links 60.The links 60, together with a short link 62, connect the lever 50 with-a horizontal lever 63, one end of which is pivoted at 64 to the yoke 52secured to the stationary beam 53 and is pivoted at its other endvto ahorizontal bar 65 having hand levers y65HL attached to both of its ends.A bell crank lever is pivoted at 67 to the yoke 5K2 secured tostationary beams 53, and has one of its arms 68 ivotally connected at 69to the horizontal gar 65, while its other arm 70 is pivoted to one endof a bar 71, the other end of which is attached to the lower end of theoperating lever 43`of the friction clutch.

When the friction clutch is to be thrown in and the brakev bandreleased, the-bar 65 is moved to the right, as-shown in Fig. 3 by meansof either kof the hand levers 65 -which movement is transmitted throughthe bell crank 68-70 to move thebarf71 to yon said shaft, a s

the right 'in Fig. 1, which operates through the lever 43 to slide thecollar 39 to the left on shaft 2. lVhen the reverse operation isdesired, the bar 65 is moved to the left in Fig. 3, thus releasing thefriction clutch, and, at the same time, rocking the lever pl-ate 50 tothe left, Fig. 2, which tightens the brake band 14 and so prevents thebrake wheel 10 from rotating.

In the operation of the device described above, the shaft 2 is drivencontinuously in one direction. When it is desired to rotate the pulleyin the same direction and at the same speed as the shaft'2,vone of thehand" levers 65a is moved to slide the collar 39 to the left on theshaft 2, thereby rocking,

,85 3 and causing itr to rotatewith ,y

50' which loosens the brake band 14 and 4permits the brake wheel and theplanetary gearingto rotate with the shaft When it is desired to reversethe direction of the pulley 3 the operating lever is moved in theopposite direction, therebyk moving the collar 39 to the right on theshaft 2 which depresses the extensions 37 of the cam members 35 andthereby moves the pins 30 outwardly and withdraws the clutch shoes 27from the pulley. The samek movement of the operatin lever causes thelever 50 to rock to the legt on its ivot 51 (Fig. 2), thereby tighteningthe bra e band and Vpreventing the brake wheel 10 and the pinion 16fromrevolving around the shaft 2. Thereupon the continued rotation of theinternal gear 17, which is rigidly carried by the shaft`2, rotates thepinions 16 on their individual axes, and this movement is communicatedto the gear 9 which is rigidly carried by the pulley 3. Consequently,the pulley 3 is caused to rotate in the opposite direction with respectto the shaft 2.

As shown in the drawing, the proportions of the various gearsv are suchthat the pulley is rotated in its reverse direction at a speed one andthree-fourths times the speed,

of rotation of the shaft 2. It is to beunderstood that variousmodifications may be 1. A reversing clutch mechanism com prising ashaft, a pulley mounted loosely eeve member mounted loosely on the hubof said pulley, a brake wheel carried by said sleeve beyond said pulley,a brake band,4 surrounding said brake mfa'de in the construction andarrangement y ro l l pulley ing radially from said coupling,

ring, a gear wheel secured to said hub, a coupling carried by saidshaft, arms extendan internal gear Wheel carried by said arms withinsaid brake wheel, and a plurality of pinions carried by said brake wheeland meshing with both the said gear wheels.

2. A reversing clutch mechanism oomprisino' a shaft a pulley looselymounted on said shaft and -having an outwardly projeoting hub, a sleeve`member loosely surrounding a portion of said hub of said a plate carriedby said lsleeve beyond said pulley, a brake flan e carried by saidplate, a -gear ring secure to the hub of sa1d pulley at Vthe side ofsaid plate opposite to the working ortion of said p ulley, an internallytoot ed gear ring extending within said brake flange and rigidlyconnected to said' shaft, and a pinion carried Yby said plate andmeshing with both of said gear rings.

3. A reversing` clutch mechanism comprising a shaft, a pulley looselymounted on said shaft and having a hub projecting` having `proJeotionsplate and extending within said internally toothed gear ring, and apinion mounted 1n said bearings and meshing with both of the said gearrmgs.

- In testimony whereof, I, the said VIUroR H. PALM, have hereunto set myhand.

VICTOR H. PALM.

Witnesses Roer. D. TorrrEN, JOHN F. WILL.

